A controlled burn on Deep Fork National Wildlife Refuge. Controlled burn is a technique used in habitat management. Fire is a natural part of forest and grassland habitats and serves an important role.

A young birder gazes out over a marsh area on the Humboldt National Wildlife Refuge. Humboldt Bay National Wildlife Refuge is located on Humboldt Bay on the northwest California coast. The refuge has two main purposes: to protect and enhance...

During the early 1800s, wood bison numbers were estimated at 168,000, but by the late 1800s, the subspecies was nearly eliminated.
Excessive hunting was the primary factor leading to population decline. Another factor that is thought to have played...